Fan for sewing-machines.



A. W. OWNBY.

PAN FOR SEWING MACHINES.

APPLICATION FILED JAILG, 1912.

1,026,923. Patented May 21,1912.

awumtoz x Way/25 gmwm aMm ALBERT W. OWNBY, OF DENISON, TEXAS.

FAN FOR SEWING-MACHINES.

Specification of Letters Patent.

Patented May 21, 1912.

Application filed January 5, 1912. Serial No. 669,599.

To all whom it may concern:

Be it known that I, ALBERT WV. OwNnY, a citizen of the United States,residing at Denison, in the county of Grayson and State of Texas, haveinvented a new and useful Fan for Sewing-Machines; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention relates to a new and useful fan for sewing machines.

The principal object of the invention is the provision of a fan, adaptedto be applied to a rotary member, such as a pulley or fly wheel, inorder to generate an air draft during the operation of the sewingmachine.

A further object of the invention is to provide an improved simple andellieient device of this nature comprising an annular band, to which theblades are clamped detachably.

A further object is to produce such clamping means, as to permit theblades to be adjusted, whereby the number of blades may be increased ordecreased.

The invention comprises further features in combination of parts, aswill be hereinafter set forth shown in the drawings and claimed.

In the drawings :Figure 1 is an elevation showing the fan as applied toa sewing machine, showing the same constructed in accordance with theinvention. Fig. 2 is an end elcvationl Fig. 3 is an enlarged detail viewof one of the blades of the fan, showing the manner of attaching thesame to the annular band.

Referring to the drawings 1 designates the fly wheel of the sewingmachine head 2, While 3 denotes an annular band. This band is providedwith a plurality of arms 4: riveted in place as shown at 5. The arms areconstructed of spring sheet metal and provided with curved portions 6,which conform to and fit the annular outside or in side circumference ofthe fly wheel. The arms fit the fly wheel close enough, and. aresufficiently rigid, to support the band firmly in position. The blades 7are constructed of single pieces of sheet metal, and are arranged atangles to the band, so as to project the air draft toward the operator.The flanges 8 of the blades are provided for the purpose of assisting ingenerating the air drafts, and by changing the angles of the flanges,the air draft may be increased or decreased. Projecting from the body ofeach blade is a lateral extension plate 9, which engage the outercircumference of the outer band. These plates 9 are formed with inturnedcars 11, to lap over the annular band, as shown clearly in Fig. 3, so asto secure the blades adjustably and detachably to the band.

From the foregoing it will be noted that there has been produced anovel, simple and efficient sewing machine fan, by which the air draftmay be projected toward the operator, and one which has not only beenfound practical, but one by which the air draftmay be increased ordecreased.

The invention having been set forth, what is claimed as new and usefulis 2- 1. In combination, an annular band having arms adapting forconnecting the band to a fly wheel of a sewing machine, blades arrangedabout the band and disposed at angles thereto, the blades having lateralextension plates provided with inturned ears to lap over the annularband.

2. In combination, an annular band having arms adapted for connectingthe band to a fly wheel of a sewing machine, blades arranged about theband and disposed at angles thereto, the blades having lateral extensionplates provided with inturned ears to lap over the annular band, theplates and ears constituting means whereby the blades may be adjusted onthe band, the blades having angularly arranged flanges adapted to bebent at various angles thus increasing or decreasing the air drafts.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ALBERT W. OVVNBY.

Witnesses P. V. Bnornns, G. KINNEDGE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. C.

